Interchangeable steam chest and valve



v v c. H. SCHL UNDT-z I'lTERCHANfiEABLE STEAM CHEST AND VALVE. vAPPLICATION mu) MAR. 5,)918.

1,349,787, P g-1Z1920.

3 SHEETS-SHEET 1.

C. H SVCHLUNDT. INTERCHANGEABLE S'TEAM CHEST AND VALVE.

APPLICATION FILED MAR. 5. I918. 1 ,349,781 Patented Aug. 17,1920.

3 SHEETS-SHEET/Z.

Witnessws:

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ziwi W 0. H. SCHLUNDT. INTERCHANGEABLE STEAM CHEST AND VALVE.

APPLICATION FILED MA. 5; NH].

1,349,787, Patented Aug. 17, 1920.

3 SHEETS-SHEET 3.

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JAG Q CHRISTIAN H. SCHLUNDT, 0F INDIANAPOLIS, INDIANA.

INTERGHANGEABLE STEAM CHEST AND VALVE.

Specification of Letters Patent.

Patented A11 17, 1920.

Application filed March 5, 1918. Serial No. 220,473.

To all whom may concern Be it known that I, CHRISTIAN H. SoriLnNDr, acitizen of the United States, residing at Indianapolis, in the county ofMarion and State of Indiana, have invented certain new and useful.Improvements in In terchangeable Steam Chests and Valves,oi' which thefollowing is a specification.

This invention has relation to steam engines, and has for an object toprovide an improved steam chest and rotary valve, whereby, to providerelatively large ports and a valve capable of positive and quick actionthereby lncreasing the efficiency of the engine.

Another object of the invention is to provide a steam chest and a valveof the character above described, embodying a new reversing valveoperable by means of a lever, whereby, a movement of the lever in onedirection will admit steam to the chest to cause operation of the enginein one direction, and a movement of the lever in the opposite directionwill cause a reversal of operation.

A still further object of the invention is to provide a new and improvedvalve operating means for a steam chest valve, oper-- able by steam orother fluid pressure whereby a greater flexibility of operation is obtainablo; the improvement embodying means for varying the valve throwand for advancing or retarding the cut-off.

A still further object of the invention is to improve the form of valveshown in my abandoned application, filed May 25, 1910, and bearing theSerial Number 563,433.

In addition to the foregoing, this invention comprehends improvements inthe details of construction and arrangement of parts, to be hereinafterdescribed and particularly pointed out in the appenl l claims.

In the accompanying drawings, in which similar and coresponding partsare designated by the same characters of reference,

throughout the several views in which they appear: i

Figure 1 is a diagrammatic view illustrating the correlation of thevarious elements of my invention.

Fig. 2 is a view in plan of my valve operating means.

Fig. 3 is a section taken on the line 3--3 oi the preceding figure.

Figs. 1 and'5 are transverse sections taken on the lines 4l--4 and 5-5of Fig. 2.

Fig. 6 is a view in section of my improved ste: in chest and valve.

Fig. 7 is a horizontal section taken on the line 77 of Fig. 6.

Ilg. 8 1s a simllar vlew taken on the line 8-8 of said figure, and

Fig. 9 is a view in plan of the valve.

lVith reference to the drawings and particularly Figs. 6 to 9, 10indicates a steam chest divided centrally by a partition 11 de finingchambers 19. and 13. A plurality of radial, ta 'ioring openings 11; areformed ad jacent the partition in the bottom plate of the chest at theright hand end thereof and in the chamber 12, a similar formation ofopenings being provided at the left hand end as indicated at 15. Similaropenings are provided in the chamber 13 in the right and left hand endsas indicated at 16 and 17 respectively. A valve chamber 18 is formedbeneath the partition to receive a valve 19 in the form 01"" a disk, astem 20 being extended through an opening in the partition forconnection to and for operating the valve. A relatively large opening 21is formed radially in the valve 19 at one side thereof, the same beingflanked at each side by smaller openings 22. A second large opening 23is provided at the opposite side of the valve and in a similar manner islanked by smaller openings 24. It will be noted that in a closedposition of the valve the openings 21 and 523 are lapped by the materialof the bottom plate of the chest between adjacent openings 14- and 16,and 15 and 17. A. port 25 is formed in the chest beneath the ports 141Cand 16, common to them both. and communicating with the rigl'it hand endof the engine cylinder 27, a similar port 26 being formed beneath theopenings 15 and 1.7 for communication with the left hand end of thecylinder.

Turn plug valves 23 and 29 are seated in openings formed in the rightand left hand ends of the partition 11 and are formed with transverseports 30. The valve 28 operable to establish communication betweeneither chamber 12 or 13 with an cxl'iaust port 31, while the valve isfor the purpose oi controlling communication between either of saidchambers and .an intake port 32. The partition 11 formed with a recessat each side of the valve stem 20 to receive recesses to retain thepacking strips in engagement with the upper face of the rotary valve. Anarm 36 is secured to each revers mg valve 28 and 2!), said arms beingconneeted for operation in unison by means oi a link 87. A hnk 38 isconnected to one o? the arms and to a reversing lever 39.

My improved valve operating means is shown in Figs. 1 to 5 and consistsof the frame 40 formed with a pair of parallel, laterally extending armsell, apertnred to receive the rod 4&2. A rod id is mounted in the frame,parallel to the shaft but adapted for longitudinal movement therein. Therod 44 extends through a cylinder and a piston movable in the cylinderand indicated at 46 is secured to the rod. Inlet and exhaust ports 4-7and &8 are provided at opposite ends of the cylinder. Stop screws %9 arealso mounted in the frame to engage the ends of the rod 4A to limitmovement thereof.

An arm 50 is rigidly connected to the rod 44 at one end while the otherend is bifurcated as at 51. A sleeve 52 is mounted on the shaft 42 andis formed at one end with an annular flange 53 formed with a circularseries of apertures. A grooved collar 5% is mounted on the sleeve andthe bifurcated end of the arm 50 is received in said collar. The rod 42is formed for a portion of its length with a pair of keys 55, and acollar 56 is slidably mounted on the keyed portion of the shaft, thekeys permitting such movement but preventing rotative mov ment of thecollar relative to the shaft. The exterior surface of the collar 56 isformed with a plurality of spirally arranged ribs 57 to entercomplemental grooves 58 formed inte riorly of the hub portion 59 of aneccentric 60. A plurality of slender rods 61 serve to connect thecollars 5d and 56 to insure mov ment thereof in unison. The hub of theeccentric bears against the enlargement 53 at one end, while anadjustable collar 62 is mounted on the rod 42 to bear against the otherend of the hub.

Inuse, the port 48 of the cylinder l5 of the valve operating mechanismis connected to the chamber 12 of the steam chest by means of a pipe 63,while the port t? of the cylinder is connected to the chamber 13 of thechest by means of a pipe Get. An arm 65 is secured to the valve stem 20,and a link or eccentric rod 66 is connected at one end to the arm 65 andat its other end to the eccentric disk 60 'by means of an eccentricstrap.

In operation, and assuming the valves 28 and 29 to be in the relativepositions shown in Fig. 7, steam will be admitted into the chamber 12 oithe steam chest through ho intake port 32 and valve 25). 'ihc steam willthen enter either the openiiurs I i or the openings 15, depending uponthe position of the valve 19. Assuming thc valve in oncrs tion to be ina position to open ihc ports 13. steam will enter the some and theengine cylinder 27 to the lctt oi the piston through the port 26 therebymoving the piston to the right. Simultaneously with the admission oi,steam in the manner stated to thc cylinder, a portion oi the steampressure will enter the pipe 6!: and through the port 11' into thecylinder 71 5 of the valve (.IHiilliitLj mechanism at one side oi thepiston therein. lhe piston t6 will also be caused to move to theopposite end of the cylinder. and in so doing move the collar 54- alongthe rod -12, whereby, by reason of the spiral connection of the collar56 with the eccentric on. to partially rotate the eccentric and therebyrotate the valve 19 of the steam chest to a position wherein theopenings 15 and 16 will be lapped, and the openings let and IT unlapped.Steam will thus be permitted to flow into the engine cylinder at the oneend thereof, to return the piston therein to the opposite end. Anadmission of pressure into the pipe 63, and conscipientlv an exhaustionthrough pipe 64, is thus occasioned to move the piston d6 of the valveoperating cylinder to its former position. with a consequent rcactuationof the eccentric to cllcci an ad mission of pressure to the other end ofthe engine cylinder, and the foregoing operation is repeated.

It will be apparent that the steam may be cut-oft at any point duringthe slrolv'c of tilt. engine piston by adjusting the stop sci'cn's et9to vary the travel of the rod ll; and the valve throw may also be variedby loosening the strap of the eccentric and rotating the disk therein.Other uses and znivanta n s ot my invention will readily occur to thoseskilled in the art to which this invent ion appertains.

lVhile I have illustrated and described my invention with some degree ofparticidaritv. I realize that in practice various altcrat ions thereinmay be made. l therefore rc crvc the right and privilege oi chainringthe form of the details of construction or otherwise altering thearrangement oi the corrclatcd parts, without departing from the spiritof the invention or the scope oi the appended claims.

Having thus described my invention. what I claim as new and desire tosecure by Letters Patent is:

1. A valve gear comprising a frame. a rod slidably mounted therein. acylinder mounted thereon, a piston mounted on the rod and slidablyreceived in the cylinder.

means for admitting fluid pressure to the cylinder at the opposite sidesof the piston, an arm carried by the rod, a second rod journaled on theframe, a collar carried by the second mentioned rod and engaged at thearm, a second collar slidably mounted on the last mentioned rod andconstrained to rotate in unison With the same and connected with thefirst mentioned collar, a hub receiving the second mentioned collar, camslot and groove connections between the hub and second mentioned collar,an eccentric mounted on the hub and a rod operatively connecting theeccentric With the valve.

2. In a valve gear a rod journaled for rotation, a collar mountedthereon, means operatively connecting the eccentric Wit for shifting thecollar on the rod, a second collar slidably mounted on the rod and constrained to rotate in unlson therevvlth, means operatively connectingsaid collars together, 20

valve. 7

In testimony whereof I aflix my signature in the presence of twoWitnesses.

CHRISTIAN H. SCHLUNDT. Witnesses:

CALVIN P. Tronlu, CHARLES L. Pecos.

h the 25

